JP3553136B2 - French drop - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to the removal of France.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a French drop has been used as a means for fixing a door at a predetermined position, such as a double-opening door or a partition door.
[0003]
This French dropper has a configuration in which, for example, a round bar or a square bar-shaped locking member is arranged to be able to move up and down in a case embedded in the lower part of the vertical frame in the door body, and the lowered locking member is placed on the floor surface. The door is fixed to a predetermined position by being fitted into a locking recess provided at a predetermined position.
[0004]
However, in the conventional French dropper, the locking recess is formed slightly larger than the outer shape of the locking member in order to easily fit the locking member into the locking recess.
[0005]
Accordingly, there is a problem that when the locking member is inserted into the locking recess, a gap is formed between the two, and the door rattles.
[0006]
[Problems to be solved by the invention]
The problem to be solved by the present invention is that in the conventional French drop, when the locking member is fitted into the locking recess provided on the floor surface, a gap is formed between the two, so that the door is securely fixed. It cannot be fixed.
[0007]
[Means for Solving the Problems]
The present invention has been made to solve the problem of the conventional French drop, and at least the tip of the locking member is formed in a non-circular cross-section, and a spiral strip extending in the axial direction is formed on the peripheral surface. And a guide for rotating the locking member about the axis when the locking member is moved up and down by fitting to the spiral strip in the case. The object of the present invention is to provide a French drop which can securely fix the door at a predetermined position.
[0008]
[Action]
When the locking member is moved up and down, the spiral ridge formed on the peripheral surface and extending in the axial direction rotates the locking member about the axis along a guide formed on the case.
[0009]
In addition, the distal end of the locking member, whose cross section is formed in a non-circular shape, is fitted into the locking recess of the stop seat provided on the floor surface while rotating, so that the distal end of the locking member becomes the locking recess. Press against the wall.
[0010]
【Example】
Next, an embodiment of the present invention will be described with reference to the drawings.
[0011]
The drawings show an embodiment of the present invention. A French dropper 1 includes a case 4 embedded in a lower part of a vertical frame 3 in a door body 2 and a sliding member disposed inside the case 4 so as to be able to move up and down. 5, and a bar-shaped locking member 7 that is vertically provided via a connecting rod 6 at a lower end of the sliding member 5.
[0012]
The case 4 is formed of a hard synthetic resin, for example, in a hollow shape with an open back surface, and is integrally formed with a cylindrical body 41, 42, 42 having a through hole for a set screw 8 formed at the upper end and below the center. A sliding member 5 having a predetermined length is slidably fitted in a concave portion 43 surrounded by the cylindrical bodies 41 and 42, 42.
[0013]
In particular, elastic locking pieces 52 are provided on the side walls 51, 51 of the sliding member 5 to be locked in locking grooves 45, 45 provided at two upper and lower locations on the inner surfaces of the side walls 44, 44 of the case 4. , 52 are provided.
[0014]
The front plate 46 of the case 4 is formed with a vertically long window hole 47 for exposing the operation piece 54 projecting from the front surface 53 of the sliding member 5 over a predetermined elevating distance.
[0015]
Further, the locking member 7 which is suspended from the lower end of the sliding member 5 via the connecting rod 6 is rod-shaped, and a tip portion 71 is formed in a non-circular cross section, and a groove extending in the axial direction on the peripheral surface 72. A spiral strip 73 is formed from the front end to the rear end.
[0016]
Further, an insertion hole 49 of the locking member 7 is formed in the bottom plate 48 of the case 4, and the insertion hole 49 is fitted with a spiral strip 73 formed on the peripheral surface 72 of the locking member 7. A protruding guide 50 is formed.
Therefore, when the operation piece 54 is raised and lowered, the spiral ridge 73 formed on the peripheral surface 72 of the locking member 7 is guided by the guide 50, and the locking member 7 is raised and lowered while rotating about the axis. I do.
[0018]
On the other hand, in the drawings, reference numeral 9 denotes a stop seat that is disposed on the floor surface 10 and locks the locking member 7, and a locking recess 91 is formed at the center.
[0019]
The locking concave portion 91 has a wall surface (or an end surface) having a shape in which the side surface 74 of the distal end portion 71 is pressed when the distal end portion 71 of the locking member 7 whose plane is formed in a non-circular cross section is screwed. ) 92.
[0020]
In this embodiment having such a configuration, as shown in the figure, similarly to a conventional French dropper, the front surface 41 of the case 4 is attached to the surface of the vertical frame 3 in the trenches 31 formed below the vertical frame 3 in the door 2. At the same time, it is embedded and fixed with a set screw 8, and a fixed seat 9 is embedded and fixed at one or a plurality of predetermined positions on the floor surface 10.
[0021]
When the door 2 is opened or closed, the operation piece 54 is raised to bring the locking member 7 into the case 4.
[0022]
When it is desired to fix the door 2 at a predetermined opening / closing position, the operation piece 54 is lowered so that the locking member 7 protrudes from the case 4 so that the locking seat 9 is disposed at a predetermined position on the floor 10. What is necessary is just to screw into the locking recessed part 91, and to lock it.
[0023]
At this time, the spiral member 73 formed on the peripheral surface 72 of the locking member 7 is guided by the guide 50 arranged on the case 4, and the locking member 7 descends while rotating about the axis. .
[0024]
Therefore, the distal end portion 71 having a non-circular cross section of the locking member 7 is fitted into the locking concave portion 91 of the locking seat 9 while rotating, and the locking member 7 is locked by the distal end portion 71. The pressing member 7 comes into pressure contact with the wall surface 92 of the concave portion 91, so that the locking member 7 is securely locked to the stop seat 9, and the door body 2 is fixed at a predetermined open / close position without rattling.
[0025]
At this time, the elastic locking pieces 52 provided on the side wall 51 of the sliding member 5 are locked in lower locking grooves 45 provided on the inner surfaces of the side walls 44, 44 of the case 4.
[0026]
Therefore, it is possible to confirm by tactile sense and the locking sound that the locking member 7 has descended to the predetermined position and is securely locked to the stop seat 9, and the vertical movement of the locking member 7 can be confirmed. The door 2 is regulated and is securely fixed.
[0027]
When it is desired to open and close the door 2 again, the operating piece 54 may be lifted, the locking member 7 may be pulled out of the stopper 9 and immersed in the case 4.
[0028]
At this time, the locking member 7 is guided by the guide 50 arranged on the case 4 with the spiral ridge 73 formed on the peripheral surface 72, and the locking member 7 rises while rotating about the axis. Therefore, the locking state between the locking member 7 and the stopper 9 is easily released, and the locking member 7 returns to the original state of being immersed in the case 4 very easily.
[0029]
In this case, the elastic locking pieces 52 provided on the side wall 51 of the sliding member 5 are locked in the upper locking grooves 45 provided on the inner surfaces of the side walls 44, 44 of the case 4.
[0030]
Therefore, there is no fear that the locking member 7 immersed in the case 4 projects from the bottom surface 21 of the door body 2 and hinders the opening and closing of the door body 2.
[0031]
In the present embodiment, the groove-shaped spiral strip 73 is formed in the locking member 7 and the projecting guide 50 is formed in the bottom plate 48 of the case 4. 50 may be formed in a groove shape.
[0032]
【The invention's effect】
According to the present invention having the above configuration, when the locking member is moved up and down, the spiral ridge formed in the peripheral surface and extending in the axial direction rotates the locking member about the axis along the guide formed in the case. In addition, the distal end of the locking member, which has a non-circular cross section, is rotated and fitted into the locking recess of the stop seat provided on the floor surface, so that the distal end of the locking member is locked. Press against the wall of the recess.
[0033]
Therefore, the front end of the locking member having a non-circular cross-section is fitted into the locking recess of the stop seat while rotating, and the front end of the locking member is pressed against the wall surface of the locking recess. As a result, the locking member is securely locked to the stop seat, and the door body is fixed at the predetermined open / close position without rattling.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state of an embodiment of the present invention.
FIG. 2 is a sectional view taken along the line YY of FIG.
FIG. 3 is a sectional view taken along line YY in a different state of FIG. 1;
FIG. 4 is a sectional view taken along line XX of FIG. 2;
[Explanation of symbols]
1 French drop 2 Door 3 Vertical frame 4 Case 7 Locking member 71 Tip 72 Surrounding surface 73 Spiral strip 50 Guide

Claims (1)

In a French drop in which a bar-shaped locking member is arranged to be able to ascend and descend in a case embedded in a lower part of a vertical frame in a door body, at least a tip portion of the locking member is formed in a non-circular cross section and has a peripheral surface. A helical strip extending in the axial direction is formed, and for rotating the locking member about an axis when the locking member is moved up and down by fitting the helical strip into the case. A French dropper with a guide.

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